Bearing for rollers of dredging-machines



(No Model.)

D. URIB. BEARING FOR ROLLERS 0F DRBDGING MACHINES.

No. 440,076. Patented Nov. 4, 1890.

mzw' 15 Kim W- JWW UNITED STATES PATENT OFFICE.

DAVID URIE, OF KANSAS CITY, MISSOURI.

BEARING FO R ROLLERS OF DREDGlNG-MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 440,076, dated November 4, 1890.

Application filed April 26, 1890- Serial No. 349,631. (No model.)

To all whom it may concern:

Be it known that 1, DAVID URIE, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Bearings for Rollers of Dredging-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and toletters of reference marked thereon,which form a part of this specification.

This invention relates to dirt-proof bearingr bushes; and it consists in the novel construction and combination of the parts, as hereinafter fully described and claimed.

This invention is specifically applicable to the rollers used on the ends of the spindles attached to the endless bucket-chain of a dredging-machine. The rollers run upon guidetracks, and as they pass down through the mud, slime, and grit stirred up by the dredgingbuckets they are subjected to conditions which are very wearing on the bearings. The bearing-surfaces of the rollers and the spindles are rapidly worn and cut away by the particles of dirt and grit which work in between them when the said rollers are mounted directly upon the spindles in the usual manner; and the object of the present invention is to provide the rollers with dirt-proof bearin g-bushes.

In the drawings, Figure 1 is a longitudinal section through one of the rollers constructed according to this invention, and Fig. 2 is an end view of the same.

A is the wheel or roller, provided with a guide-flange a for keeping it on the track.

B is the spindle,upon the end of which the roller is mounted.

D is the bearing-bush, provided with the flange d and driven into a central chamber of the roller formed to receive it, a recess being formed in the outer face of the wheel or roller to receive said flange. The wheel is bored through for the spindle; but the bush is seated in a chamber bored in the roller from one end, which, though deeper than the bush, does not go clear through, thereby forming a cavity E, that is packed with hemp or other suitable packing.

F is a cap, which bears against the projecting end of the spindle, and is secured to the wheel or roller by the screws f. This cap also fastens the bush in place.

G is a linchpin driven through the end of the spindle and bearing against the flange of the bush.

The interior of cap F forms an oil-chamber, and H is an opening for filling, closed by a screw or plug.

The roller is kept in position longitudinally upon the spindle by the pin G and cap F, which are both always well lubricated with oil.

hat I claim its- The combination, with the spindle, of the roller mounted thereon and provided with a chamber and an outer recess, the bearingbush located in said chamber and having an outer flanged end secured in said recess, the packing in the rear end of said chamber ad- 3 acent said bush, the pin passing through said spindle, and the cap secured to the roller and bearing against the end of the spindle and said flanged end of the bush and having an inlet-opening, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID URIE. Witnesses:

T. H. PONDER, W. T. URIE. 

